0.8.*
- add interface for caller DONE
- add interface for binary
0.9.*
- isolate objects like grit, clean constructor of Commit, Log, Tag, Tree, Diff by accepting the repository as mandatory argument, and a sha as optional argument
- find a way to populate object props from the sha inside the objects
- inject the caller and the command to the objects to populate props
- use sha (default to HEAD) whenever it's possible inside constructors
1.0.0
- git blame
- blobs management